Finally sent blanket text messages to everyone in my cell phone directory, informing them that they will be unable to reach me next week except by my personal e-mail address and my Google+ account.

Received all sorts of responses. Among them were a message from Mark, who said that he'd been dreaming about me and had just awakened; a "textula" from Frank that he composed; a lot of Christmas greetings; and good wishes from a lot of people whom I hadn't seen or heard from in a while.